corrode corrosion

　　erode erosion

　　这两个词都有“腐蚀”“侵蚀”的意思。corrode 指化学性腐蚀，名词是corrodion。erode 指机械物理性腐蚀，如气候、水冲刷等。名词是erodion。erosion 还可以表示“水土流失”。

　　1) If aluminum sheets are riveted with copper, the aluminum near the rivet will corrode in damp conditions.

　　(如果铝片与用铜铆接、铜铆钉附近在潮湿的环境会腐蚀。)

　　2) Certain naturally occurring conditions may corrode the valve or its components over time, rendering the valve inoperative.

　　(天长日久，某些自然产生环境条件可能会腐蚀阀门及其部件, 导致安全阀失去作用。)

　　3) Iron bridges need to be regularly painted to protect them from corrosion.

　　（铁桥梁需要定期刷漆来保护他们不受腐蚀。）

　　4) Engineers need an understanDing of the mechanical strength and corrosion resistance of various materials

　　(工程师需要了解各种材料的机械强度和耐腐蚀的能力。)

　　5) A large amount of fertile soil is eroded at the lower reach of the river every year.

　　(河的下游每年都有大量的肥沃的土壤被侵蚀。)

　　6) Humidity, and all kinds of liquids or moisture will erode electronic wires.

　　(湿气和各种液体或水分都会腐蚀电子线路。)

　　7) The action of wind and water causes the erosion of rocks and soil.

　　(风和水的作用会引起对岩石和土壤的侵蚀。)

　　8) If the topsoil is taken away by erosion, plants can no longer grow in the soil left behind.

　　(如果水土流失冲掉了表土，植物不能再在留下的土壤中生长。)

　　这两个字也表示对其他事物的“腐蚀”“侵蚀”，引申词出种种相关的词义。

　　1) Such practices, once taken up, are likely to become deeply rooted, to spread and corrode / errode one’s mind.

　　(这些做法一旦形成习惯，就会变得根深蒂固，蔓延到其他方面，并毒害人的心灵。)

　　2) There are signs that the crisis has already appoached and starts to doorode our our econmical entity.

　　(有迹象表明, 这场危机已经来临并开始消蚀我国经济实体。)

　　3) The eroding base of U.S. innovation is the biggest long-run challenge the United States will have to face.

　　（美国的创新基础基正在削弱，这是美国不得不面对长期的最大挑战。）